machinomy/lib/Mutex.test.js

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"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const Mutex_1 = require("./Mutex");
const expect = require("expect");
describe('Mutex', () => {
    function wait(time) {
        return new Promise(resolve => setTimeout(() => resolve(time), time));
    }
    // use setImmediate to mimic an async operation calling the method
    function now(task) {
        return new Promise((resolve, reject) => {
            setImmediate(() => {
                task().then(resolve).catch(reject);
            });
        });
    }
    it('should process tasks in order', () => {
        let outs = [];
        let mutex = new Mutex_1.default();
        return Promise.all([
            now(() => mutex.synchronize(() => wait(2)).then((num) => outs.push(num))),
            now(() => mutex.synchronize(() => wait(7)).then((num) => outs.push(num))),
            now(() => mutex.synchronize(() => wait(3)).then((num) => outs.push(num)))
        ]).then(() => expect(outs).toEqual([2, 7, 3]));
    });
    it('should process tasks in order by queue name', () => {
        let outs = [];
        let mutex = new Mutex_1.default();
        return Promise.all([
            now(() => mutex.synchronizeOn('honk', () => wait(2)).then((num) => outs.push(num))),
            now(() => mutex.synchronizeOn('beep', () => wait(7)).then((num) => outs.push(num))),
            now(() => mutex.synchronizeOn('honk', () => wait(3)).then((num) => outs.push(num)))
        ]).then(() => expect(outs).toEqual([2, 3, 7]));
    });
});
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